Why was slavery an effective way for great britain to support the economy of the british colonies? i need answers asap

97 points what types of changes have been made in the united states to protect people from earthquakes? a. communities are no longer located along fault lines. b. building codes ensure that structures can withstand shaking. c. warnings go off when an earthquake is expected, and people evacuate the area. d. barriers have been built to prevent flooding by a tsunami.

Globalization and technology developments have led to what some individuals have described as "flat world." what is the significance of the flat world concept? what is the impact of the flat world on supply chain requirements and strategies?

If you were a colonist who went to the continental congress meeting and heard patrick henry's speech, how would it have inspired (change your mind) about your actions? (to go to war with britain or make peace) explain. faster if you can